Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-26-2020, 08:39 AM   #1
Member
 
Desperado13's Avatar
 
Join Date: Sep 2015
Posts: 47
Little water pressure in shower - 4018

Hi all,

Just noticed that we have about 1/2 of the normal water pressure in the shower - both the shower head and wand. Plenty of pressure in sink and all other fixtures. Is there a screen that needs cleaned that would affect both shower head and wand? Could something have gotten crimped when I put slides out? Everything looks fine in compartments and no water leaking underneath. I’m hoping for something really simple!

Charles
2017 DS 4018
__________________
2017 Newmar DutchStar 4018
Desperado13 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-26-2020, 08:50 AM   #2
Member
 
Desperado13's Avatar
 
Join Date: Sep 2015
Posts: 47
Quote:
Originally Posted by Desperado13 View Post
Hi all,

Just noticed that we have about 1/2 of the normal water pressure in the shower - both the shower head and wand. Plenty of pressure in sink and all other fixtures. Is there a screen that needs cleaned that would affect both shower head and wand? Could something have gotten crimped when I put slides out? Everything looks fine in compartments and no water leaking underneath. I’m hoping for something really simple!

Charles
2017 DS 4018


It’s actually only the cold water which is about 50% of normal - there is normal pressure with hot water.
__________________
2017 Newmar DutchStar 4018
Desperado13 is offline   Reply With Quote
Old 09-26-2020, 09:31 AM   #3
Senior Member
 
Ljwt330's Avatar
 
Join Date: Jan 2018
Location: Capistrano Beach, California
Posts: 4,465
Quote:
Originally Posted by Desperado13 View Post
It’s actually only the cold water which is about , 50% of normal - there is normal pressure with hot water.
This last post tends to point toward a crimped water line, especially if slides are involved. Still possible that there is a problem inside the mixer valve or cold feed to that valve, but the first thing to investigate is the route of the water lines in the areas of the slide.
__________________
Larry, Eileen, and Finley
2004 Alpine 36FDDS
Third motor home, first Alpine, no need for another.
Ljwt330 is offline   Reply With Quote
Old 09-26-2020, 04:12 PM   #4
Member
 
Desperado13's Avatar
 
Join Date: Sep 2015
Posts: 47
Quote:
Originally Posted by Ljwt330 View Post
This last post tends to point toward a crimped water line, especially if slides are involved. Still possible that there is a problem inside the mixer valve or cold feed to that valve, but the first thing to investigate is the route of the water lines in the areas of the slide.


Thanks. I put the slides back in while my wife watched the water pressure and there was no change, however it is a little better now. Going to watch it a bit and see what happens.
__________________
2017 Newmar DutchStar 4018
Desperado13 is offline   Reply With Quote
Old 09-27-2020, 08:04 AM   #5
Senior Member
 
96kpmjmm's Avatar
 
Join Date: Apr 2011
Posts: 597
I don't believe the shower water line would be routed through a slide, but I may be wrong. I would check basement for a any shut valves that maybe half turned off. Mixer valve is also a good guess.
__________________
Kevin
2020 London Aire 4543
2019 Dodge Ram 1500. Emerald Isle NC/ Old Beau Roaring Gap NC
96kpmjmm is offline   Reply With Quote
Old 09-27-2020, 09:47 AM   #6
Senior Member
 
Capt. Bill's Avatar
 
Join Date: Jun 2009
Location: Highland,IL.
Posts: 1,138
:dance First check the flow in the shower when on city water supply & then again with it shut off & using your water pump. This will rule out a partially clogged main house water filter clog. Next - if there is still a problem with low volume cold water flow, shut off all water & remove your cold water faucet or mixer head. Look for any debris in the cold water side input. If there is none, leave it apart & rig a air line coupling to your water hose- set your compressor @ 50 PSI & your water service to city supply- give it a couple of blasts of air with a person in the shower holding an old towel over the faucet/mixer valve- see if you get anything out of the line? jack up the pressure to 80 PSI & repeat the process. This will ensure your cold water line is clear.

If this doesn't correct the problem, you may have a bad faucet/mixer valve that will need to be replaced.

Happy Trails
__________________
Capt. Bill
2014 Newmar Mountain Aire Diesel 4364
2009 Ram 1500 Crew cab toad
Capt. Bill is offline   Reply With Quote
Old 09-27-2020, 09:49 AM   #7
Senior Member
 
Geaux Tigers's Avatar
 
Newmar Owners Club
Freightliner Owners Club
Join Date: Oct 2008
Location: SE Louisiana
Posts: 199
We had a similar problem in our coach (also a 2017) about a year ago. If I remember correctly, the water flow restricter in the shower head was clogged with sediment. I believe I unscrewed the shower hose from both ends. The restricter was visible in the shower head and was easy to get out. While holding a cup over the water fixture, I turned the water on full force on hot and then cold. This got the trash out of the lines.

Had to do a similar procedure to the line going to the toilet about the same time. The faucet at the bathroom sink was the easiest. Just unscrew the water diffuser at the end of the spout.

Good Luck. —— Jim
__________________
Jim & Debbie
2017 Newmar Ventana LE 3436
1987 Ford Bronco II or 1974 VW Beetle
Geaux Tigers is offline   Reply With Quote
Old 09-27-2020, 10:35 AM   #8
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 23,922
When was the last time you changed the whole house water filter?
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
Dutch Star Don is offline   Reply With Quote
Old 09-27-2020, 10:56 AM   #9
Senior Member
 
Ljwt330's Avatar
 
Join Date: Jan 2018
Location: Capistrano Beach, California
Posts: 4,465
The oddity for the OP is that the low flow is only on the cold side, not hot, and only in the shower. Flow of hot is dependent on cold pressure from city or pump.

That rules OUT:
City water inlet/flow restricter/check valve.
Water pump having a different result.
House water filter.
Shower head aerator/screens.

That leaves:
Cold line to shower restricted.
Shower mixer valve restricted on cold side.

Agree that unlikely a cold line is routed through the slide. However, one never knows how plumbing is routed.

To the OP, if the line to the shower is crimped, being PEX, it is unlikely to open up even if the cause if the crimp is removed. You need to do some exploring.

One question I forgot to ask, did this issue just happen or has it always been that way?
__________________
Larry, Eileen, and Finley
2004 Alpine 36FDDS
Third motor home, first Alpine, no need for another.
Ljwt330 is offline   Reply With Quote
Old 09-27-2020, 11:06 AM   #10
Senior Member
 
ftharrisiii's Avatar
 
Join Date: Apr 2016
Location: Las Vegas, Nevada
Posts: 353
I had a similar problem last summer. The only difference was I had no flow instead of low flow. With my issue the hot water stop valve was plugged with sediment and needed to be cleaned. Here is a thread documenting the issue.

https://www.irv2.com/forums/f103/shower-valve-for-2016-dsdp-470478.html
__________________
Tom & Linda
2016 Dutch Star 4369
2016 Jeep Wrangler Rubicon Unlimited
ftharrisiii is offline   Reply With Quote
Old 09-27-2020, 11:30 AM   #11
Member
 
Desperado13's Avatar
 
Join Date: Sep 2015
Posts: 47
Quote:
Originally Posted by ftharrisiii View Post
I had a similar problem last summer. The only difference was I had no flow instead of low flow. With my issue the hot water stop valve was plugged with sediment and needed to be cleaned. Here is a thread documenting the issue.

https://www.irv2.com/forums/f103/shower-valve-for-2016-dsdp-470478.html


Thank all of you for your responses. I changed the whole house filter last month - it is definitely a problem with the shower itself - all other fixtures are fine, even the sink in the same bathroom. Also turning on the water pump does not change anything. Problem also affects the hand-held wand. I’m almost positive that it is a problem with the valve/cartridge itself.

Does anybody know the brand of the bronze fixture? I can’t find identifying marks. My fixture is different than ftharris. I would remove the valve to replace but I’m not sure how and I’m afraid to fiddle with it (especially with it plastic). Click image for larger version

Name:	IMG_1869.JPG
Views:	81
Size:	244.7 KB
ID:	302526
__________________
2017 Newmar DutchStar 4018
Desperado13 is offline   Reply With Quote
Old 09-27-2020, 03:01 PM   #12
Member
 
tigrlady's Avatar
 
Join Date: Jan 2015
Location: SoCal
Posts: 50
Quote:
Originally Posted by Ljwt330 View Post
The oddity for the OP is that the low flow is only on the cold side, not hot, and only in the shower. Flow of hot is dependent on cold pressure from city or pump.

That rules OUT:
City water inlet/flow restricter/check valve.
Water pump having a different result.
House water filter.
Shower head aerator/screens.

That leaves:
Cold line to shower restricted.
Shower mixer valve restricted on cold side.

Agree that unlikely a cold line is routed through the slide. However, one never knows how plumbing is routed.

To the OP, if the line to the shower is crimped, being PEX, it is unlikely to open up even if the cause if the crimp is removed. You need to do some exploring.

One question I forgot to ask, did this issue just happen or has it always been that way?
We have the exact same issue with our DSDP 4018. I removed the cover plate and checked the stops to make aure they gave the full possible range. I saw no corrosion on the brass valve. I just wound up putting it all back together and am dealing with low cold water volume in the shower. If you find and answer to this I will be a happy camper though. And this is a fairly new issue. It wasn't always like this.
__________________
Shelley & Candy, rescue (pup) Juneau
'21 ecoDiesel JLUR
2017 Newmar DSDP 4018!
tigrlady is offline   Reply With Quote
Old 09-28-2020, 09:17 AM   #13
Member
 
Desperado13's Avatar
 
Join Date: Sep 2015
Posts: 47
Quote:
Originally Posted by tigrlady View Post
We have the exact same issue with our DSDP 4018. I removed the cover plate and checked the stops to make aure they gave the full possible range. I saw no corrosion on the brass valve. I just wound up putting it all back together and am dealing with low cold water volume in the shower. If you find and answer to this I will be a happy camper though. And this is a fairly new issue. It wasn't always like this.


Tigrlady,

How did you all remove the valve? I’m not sure if it unscrews or if it pulls straight out. I would like to replace mine and if it fixes the problem, it might fix yours as well.
__________________
2017 Newmar DutchStar 4018
Desperado13 is offline   Reply With Quote
Old 09-28-2020, 10:21 AM   #14
Senior Member
 
Ljwt330's Avatar
 
Join Date: Jan 2018
Location: Capistrano Beach, California
Posts: 4,465
Quote:
Originally Posted by Desperado13 View Post
Tigrlady,

How did you all remove the valve? I’m not sure if it unscrews or if it pulls straight out. I would like to replace mine and if it fixes the problem, it might fix yours as well.
I’d suggest taking pictures of the assembled faucet and of the stem assembly as shown. Take those to a plumber and ask, they’d probably be able to ID the fixture and tell you how to remove the cartridge.

Many mixture valves have O-rings in the inlets for hot/cold and a dislodged ring could impede flow, but disassembly is required.
__________________
Larry, Eileen, and Finley
2004 Alpine 36FDDS
Third motor home, first Alpine, no need for another.
Ljwt330 is offline   Reply With Quote
Reply

Tags
shower, water, water pressure



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
2018 Dutch Star 4018 Weight/Tire Air Pressure MJM1954 Newmar Owner's Forum 7 04-19-2018 04:00 PM
4018 Tire Pressure Gheidbrink Newmar Owner's Forum 1 07-15-2017 01:40 PM
Our new little "Hudson" (little lonv) Steve N Sal RV'ing with Pets 1 12-31-2010 05:05 PM
Water pump little to no pressure BigRigRVing MH-General Discussions & Problems 5 09-18-2008 04:12 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 06:57 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.